GeForce 8800 GTS (G92) vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which has a core clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 27 Watts (25%)

Memory Bandwidth

In theory, the Radeon HD 5770 should be quite a bit faster than the GeForce 8800 GTS (G92) in general. (explain)

Radeon HD 5770		76800 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 14720 (24%)

Texel Rate

The GeForce 8800 GTS (G92) is quite a bit (about 22%) better at anisotropic filtering than the Radeon HD 5770. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 7600 (22%)

Pixel Rate

The Radeon HD 5770 should be a lot (approximately 31%) more effective at FSAA than the GeForce 8800 GTS (G92), and should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 3200 (31%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.